Li Xiang and I are typical working adults. We leave the house at 9am, and return only after 9pm. Sometimes we will forget to switch off the storage water heater and there goes a few dollars to the electricity bill.

The light indicator on the default switch is so tiny that you can miss it sometimes. It is not obvious enough.

HDB Default Water Heater Switch

We will also wake up about 30 minutes earlier to switch on the storage water heater and go back to sleep so that we can have a hot shower in the morning.